Young pawpaw tree (planted last spring as a stripling, so first spring post planting) has damage to bark and trunk.
What could have caused this? Is there anything I can do to help it?
Tree is in a sheltered location in zone 5a/b, from a nursery that provides specifically for this zone. A second tree is thriving. The tree was covered for the winter (possibly a mistake?) Seemed healthy last summer; still too early to know how it is doing this year (possibly just a hint of greening of a leaf bud.)